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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2005-11-14 10:52:06 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2005-11-14 10:52:06 +0000
commit8c87fd5df0ea2627fa612fda7cf71f107201ddc4 (patch)
treeae92f82cd01959fb60e8fd0d4c100ed696b2172a
parent73a24828b1df8505a211a9370fb4de7ab6b92a15 (diff)
fix a race condition in the sched_use_tsc patch
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2483 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch19
-rw-r--r--target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch19
2 files changed, 20 insertions, 18 deletions
diff --git a/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch b/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch
index 047ae16e2c..73d177b10f 100644
--- a/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch
+++ b/target/linux/linux-2.4/patches/ar7/006-sched_use_tsc.patch
@@ -1,7 +1,7 @@
diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c
---- linux.old/arch/mips/kernel/time.c 2005-01-19 15:09:29.000000000 +0100
-+++ linux.dev/arch/mips/kernel/time.c 2005-11-09 23:10:04.233756250 +0100
-@@ -151,6 +150,15 @@
+--- linux.old/arch/mips/kernel/time.c 2005-11-14 11:06:38.661262000 +0100
++++ linux.dev/arch/mips/kernel/time.c 2005-11-14 11:10:42.856523250 +0100
+@@ -151,6 +151,16 @@
unsigned int (*mips_hpt_read)(void);
void (*mips_hpt_init)(unsigned int);
@@ -12,20 +12,21 @@ diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c
+
+extern __u64 get_tscll(void)
+{
-+ return (((__u64) timerhi) << 32) | ((__u64) ((__u32) read_c0_count()));
++ __u32 c = read_c0_count();
++ return ((((__u64) timerhi) + (c < timerlo)) << 32) | ((__u64) ((__u32) c));
+}
/*
* timeofday services, for syscalls.
-@@ -761,3 +769,5 @@
+@@ -761,3 +771,5 @@
EXPORT_SYMBOL(to_tm);
EXPORT_SYMBOL(rtc_set_time);
EXPORT_SYMBOL(rtc_get_time);
+EXPORT_SYMBOL(get_htscl);
+EXPORT_SYMBOL(get_tscll);
diff -urN linux.old/include/asm-mips/timex.h linux.dev/include/asm-mips/timex.h
---- linux.old/include/asm-mips/timex.h 2003-08-25 13:44:44.000000000 +0200
-+++ linux.dev/include/asm-mips/timex.h 2005-11-09 22:15:59.352633250 +0100
+--- linux.old/include/asm-mips/timex.h 2005-11-14 11:06:38.685263500 +0100
++++ linux.dev/include/asm-mips/timex.h 2005-11-14 11:02:21.069163500 +0100
@@ -31,6 +31,19 @@
return read_c0_count();
}
@@ -47,8 +48,8 @@ diff -urN linux.old/include/asm-mips/timex.h linux.dev/include/asm-mips/timex.h
#define vxtime_unlock() do {} while (0)
diff -urN linux.old/include/net/pkt_sched.h linux.dev/include/net/pkt_sched.h
---- linux.old/include/net/pkt_sched.h 2005-11-09 21:25:10.686721000 +0100
-+++ linux.dev/include/net/pkt_sched.h 2005-11-09 21:54:26.063807750 +0100
+--- linux.old/include/net/pkt_sched.h 2005-11-14 11:06:38.709265000 +0100
++++ linux.dev/include/net/pkt_sched.h 2005-11-14 11:02:21.069163500 +0100
@@ -5,7 +5,11 @@
#define PSCHED_JIFFIES 2
#define PSCHED_CPU 3
diff --git a/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch b/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch
index 047ae16e2c..73d177b10f 100644
--- a/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch
+++ b/target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch
@@ -1,7 +1,7 @@
diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c
---- linux.old/arch/mips/kernel/time.c 2005-01-19 15:09:29.000000000 +0100
-+++ linux.dev/arch/mips/kernel/time.c 2005-11-09 23:10:04.233756250 +0100
-@@ -151,6 +150,15 @@
+--- linux.old/arch/mips/kernel/time.c 2005-11-14 11:06:38.661262000 +0100
++++ linux.dev/arch/mips/kernel/time.c 2005-11-14 11:10:42.856523250 +0100
+@@ -151,6 +151,16 @@
unsigned int (*mips_hpt_read)(void);
void (*mips_hpt_init)(unsigned int);
@@ -12,20 +12,21 @@ diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c
+
+extern __u64 get_tscll(void)
+{
-+ return (((__u64) timerhi) << 32) | ((__u64) ((__u32) read_c0_count()));
++ __u32 c = read_c0_count();
++ return ((((__u64) timerhi) + (c < timerlo)) << 32) | ((__u64) ((__u32) c));
+}
/*
* timeofday services, for syscalls.
-@@ -761,3 +769,5 @@
+@@ -761,3 +771,5 @@
EXPORT_SYMBOL(to_tm);
EXPORT_SYMBOL(rtc_set_time);
EXPORT_SYMBOL(rtc_get_time);
+EXPORT_SYMBOL(get_htscl);
+EXPORT_SYMBOL(get_tscll);
diff -urN linux.old/include/asm-mips/timex.h linux.dev/include/asm-mips/timex.h
---- linux.old/include/asm-mips/timex.h 2003-08-25 13:44:44.000000000 +0200
-+++ linux.dev/include/asm-mips/timex.h 2005-11-09 22:15:59.352633250 +0100
+--- linux.old/include/asm-mips/timex.h 2005-11-14 11:06:38.685263500 +0100
++++ linux.dev/include/asm-mips/timex.h 2005-11-14 11:02:21.069163500 +0100
@@ -31,6 +31,19 @@
return read_c0_count();
}
@@ -47,8 +48,8 @@ diff -urN linux.old/include/asm-mips/timex.h linux.dev/include/asm-mips/timex.h
#define vxtime_unlock() do {} while (0)
diff -urN linux.old/include/net/pkt_sched.h linux.dev/include/net/pkt_sched.h
---- linux.old/include/net/pkt_sched.h 2005-11-09 21:25:10.686721000 +0100
-+++ linux.dev/include/net/pkt_sched.h 2005-11-09 21:54:26.063807750 +0100
+--- linux.old/include/net/pkt_sched.h 2005-11-14 11:06:38.709265000 +0100
++++ linux.dev/include/net/pkt_sched.h 2005-11-14 11:02:21.069163500 +0100
@@ -5,7 +5,11 @@
#define PSCHED_JIFFIES 2
#define PSCHED_CPU 3